<form action="" class="form-horizontal" role="form">
  <div class="form-group">
    <label class="col-sm-2 control-label">广告位价格</label>
    <div class="col-sm-2">
      <input type="text" class="form-control" name="charge" placeholder="" datatype="*">
    </div>
  </div>
  <div class="form-group">
    <div class="col-sm-offset-2 col-sm-8">
      <button type="submit" class="btn btn-primary submit" data-loading-txt="提交中，请稍后……" data-ajax-url="__CONTROLLER__/saveAdPostionCharge">保存更改</button>
    </div>
  </div>
</form>